The Theory Of Sound Which Constitutes The Physical Basis Of The Art Of Music.

There is here no horizontal motion on the part of the men composing the line, but their vertical motions give rise, in the way explained, to the hori­zontal transference of the depression along the line. The reader should observe that for no two con­secutive seconds does the kneeling row consist of exactly the same men, while in such positions as those shown in the figures, which are separated by more than ten seconds of time, the men who form it are totally different.

6. Let us now return to the sea-waves and examine more closely the elements of which they consist.